sprinkler
/ˈsprɪŋklə(r)/noun
1- a device that sprays water洒水器, 喷水装置。
1.1
- a device used for watering lawns草坪浇灌装置。
1.2
- an automatic fire extinguisher installed in the ceilings of a building（装于建筑物天花板上的）自动喷洒灭火器。